updated redhat-8 base docker image to use the latest redhat-8; (#573)

* updated redhat-8 base docker image to use the latest redhat-8;

* updated tag for base red-hat-8;

Author: adityapinglesf

base/redhat-8/Dockerfile

@@ -16,7 +16,7 @@
 # the container catalog moved from registry.access.redhat.com to registry.redhat.io
 # So at some point before they deprecate the old registry we have to make sure that
 # we have access to the new registry and change where we pull the ubi image from.
-FROM registry.access.redhat.com/ubi8/ubi-minimal:8.4-212
+FROM registry.access.redhat.com/ubi8/ubi-minimal:8.7-1049.1675784874
 
 LABEL name="splunk" \
       maintainer="[email protected]" \